Process of manufacturing reinforcement for concrete columns.



D. B. LUTEN.

PROCESS OF MANUFACTURING REINFORCEMENT FOR CONCRETE COLUMNS. APPLlCATIONFILED APR. 16. 1913.

1,186,1 1 1. Patented June 6,1916.

A 770/? ND.

' the following is a UNITED STATES PATENT OFFICE.

DANIEL B. LU'IEN, 0F INDIANAPOLIS, INDIANA.

PROCESS OF MANUFACTURING REINFORCEMENT FOR CONCRETE COLUMNS.

1,186,111. Original application filed December 11,

1' 0 all whom it may concern:

Be it known that I, DANIEL B. LUTEN, a citizen of the United States,residing at Indianapolis, in the county of Marion and State of Indiana,have invented a new an useful Process of Manufacturing Reinforcement forConcrete Columns, of which specification.

My invention relates to a process of manufacturing reinforcement forconcrete columns, and has for its purpose to provide a means ofproducing such reinforcement in place without delaying the buildingoperations.

The present application constitutes a division of an application filedby me Dec. 11, 1908, Serial No. 467,095;

The invention is illustrated in the accompanying drawings, in which thesame reference characters describe like parts throughout the severalviews.

Figures 1 and 2 are perspective views showing the method of forming thereinforcement, and Fig. 3-is a perspective illustrating a method offorming a multiple reinforcement for a column, of greater Width thanthickness.

It has heretofore been customary to manufacture column reinforcement andthen raise it to place, after which the forms were erected around thereinforcement preparatory to placing concrete. \Vhen a hoopingreinforcement has been used, it has usually been necessary to wind thehooping transversely upon a wooden forming cylinder to which thelongitudinal members were first attached, and then connect the transverse hoops to the longitudinals, after which the completedreinforcement was removed from the forming cylinder and placed inposition for embedment in the proposed column. That process is not onlytedious and expensive, but it necessitates the placing of the steel forcolumns before the erection of forms. Such procedure of necessity delaysthe construction of a. building, because the steel workers arecontinually in the way of the carpenters. My present method obviatesthis difficulty in the following manner: As shown in Fig. 1' I firsterect the forms for the column, and then place the. longitudinalreinforcement,

Specification of Letters I'atent.

Patented June 6, 1916.

1908, Serial No. 467,095. Divided and this application filed April 16,1913. Serial No. 761,598.

after which I weave the hooped reinforcement on the longitudinals fromthe top. Thus the forms 68 are shown for the column and forms orcentering 69 for the floor, with the longitudinals 64 projecting fromthe forms. A coil of hooping 70 is so arranged as to be readily placedabout the longitudinals. The end of the coil is passed through one ofthe perforations 71 in a clamp 67, which is then passed over the end ofone of the longitudinal rods 64. The hooping is then passed into theperforation 72 of another clamp 67 over the adjacent longitudinal rod64, continuing thus around the column. Upon again reaching the firstclamp, the spiral enters the second perforation in that clamp, and so onfor all the others, the pitch of the spiral being thus determined by thespacing of the perforations in the clamps. It would of course bedifficult to perform this operation with clamps of the entire lengths ofthe rods, and the clamps are therefore made up of short lengths, say oneto two feet each, and as the spiral is worked into a short length ofclamp, it is forced downward on the longitudinal and new lengths ofclamp are added. In this way the hooping reinforcement is woven at thetop and slides down the longitudinals until the entire column reinforce-"ment of longitudinal rods is bound about with a clamped hooping frombottom to top.

For a column having corners, it is desirable that the longitudinals 64occupy the corners, and in such cases the hooping 70, would preferablybe arranged inside the longitudinals. This is readily accomplished asshown in Fig. 1 by arranging the clamps 67 outside the rods 64 and thehooping inside. in some cases, however, it may be desirable to have thelongitudinals inclosed by the hooping, and the modified method foraccomplishing this is shown in Fig. 2. For this it is necessary only toreverse the clamps and to pass the coil over the top of each clamp 67 asit is reached, and then downward, as at 89, to its proper perfora tionin the clamp.

In Fig. 3 the method is illustrated in connection with a doublereinforcement for a widened column, and in this case one set oflongitudinals serves in common for both rewas... a i

inforcements. A modified clamp 88 is used on these common longitudinals,consisting of a closed ring of wire bent to inclose the transversereinforcement and the longitudinal in the same manner as a singleperforation of the sheet metal clamp. The hoops of one set ofreinforcement alternate with the hoops of the other set on these commonlongitudinals. Sheet metal clamps 67 on the other longitudinals maintainthe form and pitch of the reinforcement. In this system of doublereinforcement, the coils 70 or may be placed as shown in Fig. 3, and aseach strand is carried to the longitudinals, it may be inverted over thelatter thus taking its proper place and alternating with hoo s from theother coil, producing an inter igitating of hoops that may-be extendedto any number of such reinforcements in a series in a column or wall.This method of arranging the coil and inverting each strand may ofcourse be emloyed in the single reinforcements shown 1n Figs. 1 and 2,instead of the arrangement there shown.

If in the double reinforcement, it be desired to pass one loop throughthe other corresponding loop it may readlly be accomplished by carryingthe coils 70 and 7 5 around the column, (see the arrows in Fig. 3), asthe strands are unwound from the coils and hooped about thelongitudinals.

It is of course essential in performing this process of weaving thereinforcement, that the longitudinals be held in substantialparallelism, and that the clamps all have sufficient play to slide,preferably freely, upon the reinforcement and then placing it.

I claim 1. That improvement n the art of producing a column ofreinforced hardening plastic which comprises the placing of longitudinalreinforcing member's substantially- 111 Position for embedment in thecolumn,

the association therewith of a reinforcing member extending transverselyadjacent such longitudinal members, connecting the longitudinal andtransverse members by a connecting member, and sliding such connectingmember and transverse member longitudinally of the longitudinal memberto make room for a succeeding transverse member and connecting member,and subsequently embedding in a hardening plastic the reinforcingstructure thus formed.

2. That improvement in the art of producing a reinforced column ofhardening plastic comprising the placing of longitudinal reinforcingmembers substantially in position for embedment in the column,associating therewith receiving clips adapted to 'tudinally movablethereon, and the association with said receivin members of a helix ofreinforcing materia passed over the ends of the longitudinal members andslipped, together with the receiving-members, longitudinally of thelongitudinal members, and embedding such reinforcing structure in ahardening plastic.

4. That improvement in the art of reinforcing a concrete columncomprising placing longitudinal reinforcing members in an uprlghtposition, then weaving a hooping around the ends of the longitudinalsand securing such hooping to each longitudinal by a sliding clamp, thenmoving the hooping down the longitudinal members to place, andsubsequently embedding in concrete.

5. That improvement in the art of producing a reinforced column ofhardening plastic, comprising th placing of longitudinal reinforcingmembers substantially in position for embedment in the column,associating therewith receiving clips adapted to embrace thelongitudinal members and associating a reinforcing helix with such clipswith the longitudinal members on the exterior of such helix, and thenmoving the clips longitudinally of the longitudinal members to carry thehelix between the clips and the corresponding longitudinal members toretain the same, with the longitudinal'members still on the exterior ofthe helix, and subsequently embedding the reinforcing structure thusformed within a body of hardening plastic. i

6. That improvement in the art of reinforcing a concrete column,comprising plac- 'ing l,ongituol ir ial reinforcing members in an.npright positlon, then weaving a hoo "around the ends of thelongitudinals but inside of the figure formed by the longitudinals andsecuring such hooping to each longitudinal by a sliding clamp, and thenmovday of March, A. D. one thousand nine huning the hooping down thelongitudinal menidred and thirteen. bers to place inside of the figureformed by such members, and subsequently embedding DANIEL E in concrete.Witnesses:

In witness whereof, I have hereunto set FRANK A. FAHLE, my hand atIndianapolis, Indiana, this 22nd G. B. SCHLEY.

copies of this patent may be obtained for Me cents each, by addressingthe "Commissioner 01 Iatents,

wsshlngtem'n. G.

